Yep, I took my first couple ipads back. Couldn't live with the screen. It was like going back to an iphone 3GS.
Well, the iPad 1st gen was released before the iPhone 4, right? So no one knew what Retina was when it came out.
I got my iPad 1 a month before the iPhone 4 was announced. When I finally got an iPhone 4 in November of '10 my interest in the iPad did wane a bit as the screen door effect started to become noticeable.
I held on to that first iPad until November of '11. I actually was tired of the size of it and bought a Blackberry Playbook which was a good size at 7" and was adequate for my travelling/movie & tv watching.
Of course...the pull of the app store got me back into the iPad by March of '12. Sold the Blackberry Playbook for the amount I paid and got an iPad 2, then decided to upgrade to a 3 a few months later after deciding I wanted Retina!!!
Then the Mini comes out...awe man, back to the form factor I like....7-8" are better for portability I believe. The screen is better than my 1/2 iPad, but it has been difficult to give up the Retina of the 3 as I sold it this year.